package com.atguigu.rabbitmq.springbootrabbitmq.config;


import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * @author: like
 * @Date: 2021/07/20 0:03
 */
@Configuration
public class DelayedQueueConfig {

    //交换机
    public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";
    //队列
    public static final String DELAYED_QUEUE_NAME = "delayed.queue";
    //routingKey
    public static final String DELAYED_ROUTING_KEY = "delayed.routingKey";

    //声明交换机  基于插件的
    @Bean
    public CustomExchange delayedExchange() {

        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-delayed-type", "direct");
        /*
         * 1、交换机的名称
         * 2、交换机的类型
         * 3、是否需要持久化
         * 4、是否需要自动删除
         * 5、其他的参数
         */
        return new CustomExchange(DELAYED_EXCHANGE_NAME,
                "x-delayed-message",
                true,
                false,
                arguments);
    }

    @Bean
    public Queue delayedQueue() {
        return new Queue(DELAYED_QUEUE_NAME);
    }


    //绑定
    @Bean
    public Binding bindingDelayedQueue(@Qualifier("delayedQueue") Queue delayedQueue,
                                                      @Qualifier("delayedExchange") CustomExchange delayedExchange) {
        return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();
    }


}
